GM Power Steering Noise/Leaks
Some customers may comment that their vehicle is experiencing a power steering noise/whine or fluid leak from the power steering pump, gear or high-pressure power steering hose during extremely low outdoor temperature operation.
Power Steering Hoses: Inspection And Repair
As part of any power steering inspection, first look at the fluid. If the fluid is grey or black, it could be a sign the inner layers of the hose have been compromised by worn, degraded or incorrect fluid. This type of discoloration is caused by rubber or metal particles in the fluid.
Power Steering Dynamics And Diagnostics
Twenty-five years ago, when the power steering failed, diagnosing the system was easy. The most difficult problem to diagnose was the “morning sickness” that plagued some vehicles when they were cold. Today, the introduction of speed sensitive steering, electric power steering and computer controls have made power steering diagnostics more demanding.
BRAKELIGHT: 1953 Pontiac (March 1953)
With the “Wide Track” design five years away, it is amazing to see just how much body roll was considered normal. The main difference in the 1953 was a lower roll center and longer control arms.
Electric Power Steering Diagnostics
Electric power steering is more energy efficient than hydraulic systems and does not provide assist until it receives driver input, but there are differences in the hydraulic and electric assist that will affect the driver’s and technician’s understanding of the component and its integration into the ESC and self-park system.
GM Power Steering Pump Replacement Tips
An analysis of returned power steering (PS) pumps that had been replaced for noise, no power assist, no or low pressure and leaking conditions has indicated a high number of “No Trouble Found” results. When attempting to repair a power steering concern, the steering system analyzer should be used to assist the technician in a successful diagnosis.
Power Steering Fluid Is Just Power Steering Fluid, Right? Not Necessarily, Especially When It Comes To Imports …
Savvy technicians know to use dedicated power steering fluids for the many models, both import and domestic, that call for them. There are still many cars on the road for which ATF is appropriate. However, in recent years, some European automakers have specified a more advanced synthetic fluid for use in power steering systems.
Tech Tip: Hyundai Power Steering Pump Whine
Before replacing a power steering oil pump for a “whine” noise condition, check the oil pump reservoir filter screen for contamination. If the filter screen at the bottom of the oil pump reservoir is clogged, it may cause the pump to aerate and produce a “whine” noise.
CARDONE Introduces ‘Simple Power Steering Contamination Test’ Technical Video
CARDONE just released a new ProTech technical video titled: Simple Power Steering Contamination Test. This new 2-minute video explains a quick way technicians and shop owners can show customers why it’s important they flush their steering system and/or replace their steering hoses. Visual proof works best!
Servicing Variable-Assist Power Steering Systems
Variable-assist, variable-rate or variable-effort power steering is used on a growing number of vehicles. Variable assist is a way of providing the best of both worlds: finger-tip parking maneuverability at low speed and reduced assist at higher speeds for greater stability and road feel. As a vehicle’s speed increases, less effort and assist are needed to steer the wheels. Variable-rate steering, by comparison, applies more assist at low speed when it is needed most and reduces assist at higher speeds when it is needed least.
Tech Tip: Volkswagen Electro-Mechanical Power Steering Warning Light Illuminated
The vehicle owner may be concerned because the battery was disconnected and now the Electro-Mechanical Power Steering Warning light is lit on the dash on a 2009 Volkswagen Eos Komfort 2.0L. This may be caused by an unprogrammed steering angle sensor (G85).
AMSOIL Offers Synthetic Power Steering Fluid For Import Vehicles
Formulated with a high viscosity index, AMSOIL Synthetic Power Steering Fluid resists heat for long fluid life. It helps seals remain soft to prevent leaks, while helping components remain clean and last longer. Power steering components and hoses receive maximum protection against wear and stress for extended equipment life.